Automatic changeable sign.



No. 821,068. PATENTED MAY 22, 1906. T. W. THOMAS G. W. GILLETTE. AUTOMATIC GHANGEABLE SIGN.

APPLICATION FILED MAY 18, 1905.

6 SHBBTB--SHBET l.

ifm/255 E5.- @we PATENTED MAY 22, 1906.

APPLXOATION FILED MAY 18.19054 6 SHEETS-SHEET 2.

No. 821,068. PATENTED MAY 22, 1906. T. W. THOMAS L G: W. GILLETTE. AUTOMATIC CHANGEABLE SIGN.

. APPLICATION FILED MAY 18-, 1905.

e sannfrs-l SHEET a.

No. 821,068. PATENTBD MAY ZZ, 1906.

' T. W. THOMAS & G. W. GILLBTTE.

AUTOMATIC GHANGBABLE SIGN.

APPLIUATION FILED MAY 18.1905.

6 SHEETS-SHEET 4,

No. 8215068. PATENTED MAY 22, 1906. T. W. THOMAS & G. W. GILLETTE. AUTMATIG CHANGBABLE SIGN.

APPLICATION FILED MAY 1B. 1905.

6 SHEETS-SHEET lllllllllllllllh' PATBNTED MAY 22, 1'906. T. W. THOMAS L G. w. GILLBTTB.

AUTMATIO GHANGBABLE SIGN.

APPLICATION FILED MAY 1B. 1906.

6 SHEETS-SHEET 6.

UNiTED STATES PATENT OFFICE.

THOMAS Vl'. THOMAS ANU GEORGE W. (.ILL l'lvlll, OF CLEVELAN I), OHIO, ASSIGNORS, BY DIRF "l` ANI) MESNE ASSIGNMENTS, OF ONE-HALF TO SHERIDAN RISLEY, OF CLEVELAND, OHIO.

Specification of Letters Patent.

Patented may 22, 190e.

n v'ilicznimi led May 18| 1905. Serial No. 250.969.

.'l'o all whom it "my concern.-

Be it known that we, Tuonns W. THOMAS and GEORGE W, GiLLn'r'rE, citizens of the UnitedStates, residing at Cleveland., in the county of Cuyaho a and State of Ohio, have invented a. new an useful Automatic Changeable Sign, of which the following is a. specification. I

Our invention relates to improvements 1n advertising-signs in which the signs continuously and automatically change; and the objects of our invention are, first, to provide a continuously-changing sign eilcient and economical of operation which can be adapted to any number of signs, to signs of any size or shape, and to any space avaiiable second, to provide efficient means for extracting and inserting different signs; third, to provide an automatic operating mechanism for such signs; fourth, to provide a simple and eilicient controller which will afford facilities for easily changing the duration of exposure and order of succession of the various signs, and, fifth, to provide such a changeable sign which can be economically illuminated by any kind of light. Te accomplish these objects with the novel arrangement and construction of parts hereinafter described, illustrated in the accompanying drawings, and pointed out in the claims appended hereto.

In the accompanying drawings, Figure 1 is a front view of the sign without the driving' mechanism. Fig. IZ is a top view of the sign. Fig. 3 is a side view showing the magnetic brake and arrangement of the light and shield. Fig. 4 is a rear vien" of the magnetic 5 brake. Fig. 5 is n, side view of the magnetic clutch-driving mechanism. FigA 6 is n. detail showing the suspension of the sign-frames on the carrying-chains. pension of the sign-frames liet-Wren the crossnirs. Fig. S is it cross-section ol' :t sign-[ruine along the line B C, Fig. 6. .show the device. for holding the signs in the signi-trainee. Fig. ll is a side view of the spel-Liegiiliitoi' ol' the main controller. Fig. l'. is it top view of the suini'. Fig. lll shows (lic controller for Ilw nuignrm Iaiuki. Fig.

l-l .shows the arrangement of the brushes ou thilmtiii controller. Fig. l5 is' it horizontal ri'osi-sri'l-ioii ol' tlulriignctic rlillrh, showing the iti'limgcnu'nl ol' the muguet-coil und nr nuttin-v on I Iii` driding-eiwit.A Fig. loisy ii dim Fig. 7 shows the siis- Figs. l) and lll grammatica drawing showing the electric wiring and connect-ion of the various parts in operation. g Similar characters refer to similar parts g throughout the various views. i The four upright bars l 1 and 2 '2, secured i to four horizontal hars 3 3, and the four coni' necting angle-irons 4 4 and 5 5 constitute the framework of the maclnne. The shaft 6, Figs. 1 and 4, turns in suitable bearings in the rear upright bars of the frame 2 2 and extends through on both sides thereof. The sprocket-wheel 7 is rigidly secured to the s iat 6 wthln and next to the bar 2 of the frame, and a sim lar sprocket-wheel is in like manner secured to said shaft on the o posits side of the frame. Two chains 8 o equal length run over these sprocket-wheels to two small sprocket-wheels 9, thence down the front of the machine and over two similar wh eels l0, thence buck over the large sprocketwheels. The four small sprocket-wheels Q and 10 turn on short studs 27, hung in the forward upright bars of the frame 1 l, and the inward ends of the studs are countersunk into the wheels, so as not to interfere with the revolution of the sign-frames. The lengt-h of the chains 8 depends on the number of signs to be shown. Si uur@ iron bars 1l, Flg. 2, ai equal intervals, tlie'r distance apart dcpending on the height of the signs to be shown, are suspended between these chains, both ends thereof lli-ng turned down and rounded and takngthe place of rl vets in the ehafns, as shown at l2, F :2 and 6. Secure-d to the front of and ruiming the length of these hnrs are tliii plates 13, extending above und below the hars, Figs. 7, S, und il). and ut liotli ends of euch lmr uriserureil sdr plates Zl, Fg. (i, consisting of lnl pluies willi their edges lient upward nl right angles und then outward ni right angles, so iis lo forni llunges all` liotli sides thereof, (conforming in slnipv to that. ol iluI pluie If'. is .shown in Fig. l0.) The U-sliiipcd pliilil5 is .secured lo und connects Ihr ends ol` these pluies 22%, und iis thus` constructed ilw hors Il. the lmlloin pluies I3, ihm-iid pluies 1222. und ilulop pluie L'i forni rectangular sign-clml'oi'tvr [ruines lmvlng reti(iiiiig-llimgisnl tluysill-.sund Inps. 'llul sign i'lniiur-lrrs are secured in llwsc l'lunus` ln' ilul ilivl'v shown in li'lil l in l".g.-'. .(i, il, und Il). in u'lili'h ll is n l1oldiii; r-plntc IOO with the edges bent upwurd nud outward, ns shown, Fig. ttl, similnr in shape to the side plates 23, equal in length to thc heivht of the frame, secured to one end of which y the screw 2l is the slide t7, consisting of a late pointed at l5, having the slit I9 nn the ilange 2U for u. bundle, which plate slides in the roove in the holding-plate under the headgof the screw 2l. The s'gn characters, which muy be of any suitable material, are slid under the flanges at the top nnd sides of the frames 15 und 23, und the holding-plates are then placed between the edges ofthe sign characters, the end without the slide sliding under the .top flange of the frame and the pointed end of the slide being pushed into the perforation 22 in the plate 13 at the bottom of the frame.

The sign-frames are connected to each other by collapsible rod and tube connections constructed as follows: To the under sides of the outer flanges of the side plates 23 of the sign-frames are secured small tubes 24, sliding into which are the rods 25, the free ends of which are secured to the succeeding cross-bars bv beimr bent around the rounded part thereof, as shown et 26, F ig. 7. This device keeps the sign-frames in position be* tween the cross-bars and at the same time compensates for the difference bet-Ween the length of the are described by the chain in traveling over the wheels and the dist-ance between the bars by allowing the sign-frames t0 colla-psc. or overlap when the chains travel around the sprocket-wheels.

A light-shield 30, Figs. 1 and 3, of suit-able o aque material, covers the front of the msc une, having an opening in the center the size of the signs beinT shown, being secured at the bottom to n rod29, which is suspended between and turns in the brackets 28 28, nttached to the upright bars l l of thc freine and being held in position by the spiral springr 31 31 on either side. This shield prevents the. esce e ol' any light except through the sign un by being hinged ut` the bottom does notv interfere with the sign-frames es they turn corners.

The illumination is accomplished by the lamp or lumps 34, Fig. 3, which nmv be of any kind. contained in the sheet-iron box 32, g thc front cnil oll which is open und the size of the signs shown litting up close to the sign l being shown, the inner sides ofsuid box beingr i polished nud hnviug u relier-tor 33 in the reni' l end. Said light-box muy he supported in i uny suitnblc n'umner by supports or hrm-kuis i extending from the sides ol' tht` lrulne, suid i .supports being no purl ol" our invention. We prefer to support it with the brackets ltll nud ltll, Fig. il, which nre secured to the; lower iriunc-hurs --t und Fi, :is shown.

'lho signs nre roluted h t' tulnns of power applied to n muguotic. clutch mechanism nttnched to one end ol the shall t'i nud nre i for snid clutch-coil circuit.

echoes stopped und held in iosition by means of a magnetic brake uttne ied to the other end of said shaft, Fig.

Fig. t5 shows e cross-section ot' the niagnetic clutch, in which 6 is the shul't extending through the rear bar 'l of the frame. The cnst-iron frame 35, containing the magnetcoil 36, with the brass retaining-plate 34 secured to it, revolves freely on the shaft und forms the pulley to which power is applied bv the belt 39, Figs. 2 and 5. To the outer side of' this freine 35 are secured two concentric brass rings 37 und 38 of different diameters, cach mounted on similar fibrous rinus for insulation, to which the ends of the coi are connected, as shown, Fig. 15. The bracketV 40, Figs. 2 and 5, secured to the rear upright bar 3 of the frame, carries the fiber plate 4l to which the two brushes 42 and 43 are attached and held in contect with the brass rings, as shown. A solid iron disk 44, Fig. l5, is se cured to the shaft by a kev 45, so as to have. sli ht lateral movement tiereon, but to revo ve with thc shaft- As thus arranged the pulley may revolve continuously on the shaft, but will revolve the shaft only when by being energized it attracts and turns the disk or armature 44.

The magnetic brake is shown in detail in Figs. i2, 3, and 4. To the end of the shaft 6 is secured the star-sha ed brake-Wheel 46. Attached to the top of t c frame by the bolt 47 hangs the lever 4S, secured to which, as shown, 1s the roller 49, which fits into the depressions in the brake-wheel 46 and holds the shaft stationary. The heavy lines, Fig. 3, show the position of the lever when holdin the shaft, and the dotted lines show its position when the shaft is free to revolve. At the bottom of this lever is n bolt thsecuring the connecting-rod 5l, which is bent and runs through a hole in the plunger 52 und is secured by a cottexpin .53. The plunger 52 is an iron rod sliding heck und forth within the nnlgnctic coil 54, supported in un iron yoke o1* frnine. 55, which In tui :l rests on the base-board 5b, attached to the liumc ol' the machine. To the other end ..l' the )longer within the coil is secured the smnlll hrnss rod 57, extending through the udjustnhle plug or bushingr (it), which l'egulntes l he stroke oi the plunger in the reni' ol tlnl coil, nround which ruil is the spiriti spring 5N, stint-hed to the nut :'i.) und the udjustnble plugv till. 'lhc outer end of this rod is threaded und carries the lin-lul cross-hut' lil und tht` regnlntingnuts` (31.. tilt nud 64 nre insuluted mctul posts inserted in theeluteh-coileirruit which, with the bnr tLeoustitute :l eireuit-hrenher tif nltll liti nrtsimihu' posts inserted in the lighting-circuit,

| Whh'it, with the sittin' cross-bur lil l'onstit utc u circuit-bt'eulwr lor sind light ungen-ruit.

When tht` coil .-'il is energized, the plunger ."i.' is drown in und thi` shnlt. is ln-lil h v the le- IOO 8521,068 k wir 1W.

Qver an`d brake-Wheel, es shown. In this othe other side of the support is secured `to sition the cross-bar 61 completes. the lig t'- shaftvandfturnng free on ltthe'rockering-circuit and .breaks the' clutch-coil circuit, ,arm l85, ,and at either-end-t ercof are secured while when the circuit to'saidcoil 54 isbroke on suitable studsthe cog-wheels 80 and 5fthespring'58- ush'es the plun erout'and re# Three similar sprocket-wheels 86 86 86 are 7o '.leizisesthe'sliti t; breakin the jlghting-cicuitsecured to the cog-WheelsSO and 81 and to and :completing the clutc coil circuit. thesshaft 82, reslpectively-, ,over which runs zi-:This 4slgri as IWe 'have made it is o erated the chain 87, so t at theV power applied to the srbyfmeans'of tWo cnntrollerscomb ed'- a.. .pulley 83 turnxslthecog'fwheels() sud 81 1n [oumainficontrolleforV starting themagnetic unison.; cog-wheelst'are soaijusted 75 i .jclutc'hf` lmechanism 'and another controller` on the rocker-'arm 85 that whefl'one'is in geur con'nect'edf therewit for working the msg`v -the other is free.`4 The large cog-Wheel 80, .motie-brake.; On t e shaft betweenthe vwhich turns the'cylinde'xfast, is held in gear framecnd lthe ma ctie clutch is secureda bythe spiral spring l[88,1 and this eslrv is re- 15 4smallcog-.Wheel 65,`\` Fg. 2 geared into 1 leased and thes'mall 4co-wheelt rown in, 8o

large.'mpg-wheel 66,' which is secured ,to the tumin 4thecylindefr slotjer yby the ener iza- 1r '.'outeij'end of the shaft 68,` Fig. 13, turning in tion the magnet-col`89fwhich pulls own a bearing in the 4cross-fiume 67, Fig"l 5, et-y thslplunge. 90;"s1idingpw'thinsaid coland attachedfto the mein frame, as shown. On Vvtsched tofthearm bylalj'small-cnnectng- *zo the Iside ofthis crossframe 67- is attachedv `rod, as'shWn-.sjGn-'tli ylinder-'fat equal 8 5 -thebracket-69 bythe bolt 72, which supports y intervals ufoundfit',` are lateral Vrovers of holes .14 the other e' d 'of the shaft 68 securedto und 91,15% -lthenumher/of rows bein not less4 cylicle'xLIii);L than 'Ifhe cog-wheels 65 and 66 are, of such relat'llve ing-cha z 5 size-thatithefcylinder 70, turningawith the V 'echf row large wheel; makes one'complete reif'olution simultaneouslywth a. completcrevluton s aced [f g 'rowsrlpxmngarund i of the signs'. Secured toa ar 75,' runnin t t Aegcy 'turning wit which-'isis brass 35`regliler `nitezjvills aroundv the circ'uinference-l e 1 00 contact when the cylinder is rotated WithQts do this withth 4o corresponding brush .andV with 1on1 I 2 .rpugnetic Abrake stops an brush.: i 74 'is another brushfsecure contoc't fwith the cylinder. "Thewires are so connected to these brushes, as will be herein- 4 5` after shown that when acertain in: makes the dotted conta'ct with-its corres ending' rush'.the psssesth'e ed e d? holds the signs sta.- pulls the;`

771;;tunung yilitny suitab e support stione end )be a pliedgseperstcly ndm the-sup ortand housing 78, F` ,111-, et thesi t the othitelde'vice illustratedjnligs; 11 16 is vshovin a diagrammatic drawi an d;12 :s -for the purpose of two ing of thejwrf and operatlouof theisi as\ 55 speeds; to thlscontroller. Two spe `are e whole. '-r1-.'Thlenrushes 92(0,11 c'd ef ij) :2 0

Warrior the pur ose of having thecorltrolare connected b separate wires witht ecor# erfevolx quie when thereareno respondx'pgb'rus e873 b'c d 'f g' ht" '1) beir shown and-s owly when there are. ee en 1 the brake-ccrrtmllen` In operation, t e 4 cur to @the-outer en d of said shaft 77 is the gmagueticolutch ort-pulls is revolved'contin` 6o cog-wheel "791` whichl is turned 'by either If 'uously on itssheft und t le'main controller is 1 25 t the cog-Whse s 8 0 o 81;v geared' into it'.' 'Pu'rn-v revolwqd, Bie spring lof,` the-'s eed-regulator' i :um in a bcarmgln thetop of the su-p orljI 78 is 'lold .itstgfastfspeedf ',The eectric current' a s ort shaft 82A,- on the outeigend oiwhichiis flows ronvhthe' source (100 toi'the "brush 93,? .secured-:the smellpulley v83, Ito Whi'cllfany ,which,beingiin-hntinuausscontactfwrththef 65 :avaliable power 1s emlied` by. belt A'8 f.1. l VOriA jbrassylinder 3176; ofc-thezmirrrconttoller 2130 nnlhvs sind cylindvl' lllivv. ',lo show :nl lV pal'- tivnlal' sign, two contact-pills arc inscrtvtl ill ollv ol thc rows of holvs in vylintlvr 76, oliv. in thv vini holv, so ls to nlakc contactA with the hrnsh it?, and thv othvr in thv holo which will nlal vcontllvt with tllv llrnsh vol'l'vsponding with thv sign to hv Ishown. Whvn tllc cylindcl' rnvolvcs so as to nlakvfvontnvt hvtwvvn thc pill and tho hlnsh .t2, thc circuit is vom llctocl through thc voil S0, which throws nl thc slow gcal lor thc. vontrollcl and 3.5, thus rvrolvinv,r thc signs and witll thvnl thc v rlindcr 7U ol thc llrakv-volltlollvl. At. thv salnlv tilnv. thc othvr contact-pin nnlkvs volltavt with its vorrvspollding brush, inaking thv hl'nsh on thc lll'akc-controllvl with which it. is volnlvvtvd alil'c, and whvll thv corrvst'lolldingr pill on tllv v ljlindvl' 7() lliakvs vontactwith this lll'nsll tllv vil'vllit. thl'ong'rll t'hv llrakccoil 54 is volnplctcdI and thc pllnlgvr 5'! stops tho l'nrthvr rotation of thc signs At thv sanlv. tilnv. h v thv nlol'cnlvnt. of this lllnlgcr tho circuit through thc lnngllvtic c ntic-h 35 is. llrolcvll atil (S4, lvaving said clutch or pulley rcrolving frvvly mld thc lighting-cil'- vnit. conlplvtvd llt. (i5 (ib. 'h'vll tllo nn'lin controllvr rotatvs .so that. thc cont-acts llctwvvn tho pills and hrns'hvs arc hrokvnI thv sill-ing: SH throws tllv largc gvllr XU in, puttingt.

lc vylilldvr 76 again aL last spvvd, tllv springr on thv. llrakv rvlvasvs tllv shalt (i and llrvaks thv ligllting-virvuit.

By this s vstvnl ol' vontrollvrs any nnlnllvr of signs may hv shown in an ordvl dvsirvtl :nld may llv rvnvntvll or .skinpvd hy placing or omittintr thv' vont-.lvt-pins in thv vol-rw, spolnling llolvs ill thv nlaln v olltrollvr-vylintltt'. l

Having thus t'nll \v dvsvrillvd thv construction and opvraton ol' ont` inrvnlion, what wv claim as nvw, :llnl llvsil'v lo svvnlv ll llvttcrs latvllt, is

l. A changvalllv sign, comprising rigid sign-lranlvs '.'nlspvndvtl hvlwvvn chains t|a\'. cling around s'novlwt-whvvls, lnvans for s vvnl-ingr thv si n-t`rnlnvs .so ns to allow tllvnl to lravvl with thv chains nronll'd thv .spun-kids,

comprising a rod hingvd tovach sign-traina and u tnllv svvurvd to vnvh prvvvdlng-signfranlo into which said rod slidvs, substantially as dvsclillvtl. l

L. ln a vlnlngvahlv sign; thv combination ol a pair ol' vndlvss chains, pnirs of sprovkvts around which thc chainl-l lll'v callsvd to tlavv'lz a driving-shaft svcnrcd to a. pair of' .said sprockvts to t-nrn said vilains in unson, n scrlvs nl' hars vxtvndingr hvtwcvn .said chains,

thv vnds ol' said hars hoing shaped to talicv thv plavv ol" and svrvc as rivvts of .said Vvilains; sign-frantvs svvnrvd to cilcll har, und nlvans l'or attaching t-llv sign-l`runlvs to cach sncvvvding hln', comprising ll tubo atttlcllvd to the lnldcr sidvl of vacll lllllnv. and a rod slidingr thcrvin attached to cach succccding llalr and i ing vscri llcd.

l'rvvl to turn thervoll, substantially as (lvsolillvdg.

3f [ll a chalwcllhle sign, the combination ol' a pair otvnzlivss chains, pairs of sprockvt's around which the chains nrc vausvd to travel, v. driving-shaft, Svcurcd to a pair of said sprokvts, a svrlvs of hars snspvndvd between said chains, sivll-franlvs svcllrcd to @ach har and connectedh t0 cllvh succvvding lil by` il vollnpsilllv rod luid tullv vonncctiolna lightsh vld having;r an opvning thv size ofi-hv :ognl'rllinvs svcnl'vd to thvv front; of' the-sign `by hingvs and s|lrngs,inn l a. sollrvo ofligllting vilntanvd in al suitable light-box svcllred be# hind thv light-shvld and within .thc series of sign-traumas, substantially as dvscrihvd.

4. lll a. changcablc sign, thv combination ol a sEgll-ctlrrvr comprising a series ofwsignfl'alnvs snspvndvd hvtwvvn a pair of endless chains,- pairs of sprockets around which vthe vllnins arvwnusvd to travvl` a shaft to'whi'clli [la vnrvd, withj 1aljinfnlrl said illiiilgs 'l coil contained in` a snitahlv iroll frame-within brass rvtuiningqlhltmaid frame being frvlcfto rvvolvton 'sad *shaft and (onstitllting thcfpulf' lv); to wl"chilol\\v`r :'slllinllcd, insulated brass rings conovnlliciwitllsaidshaftl secured to* tll'v oni'lsidv if said." n'f lucani `'c fr'lllefctcd .with tht` oppositY cndgo snidllnagnt La llrn'sh l'or cach itingwsliittlhll'f.iuspcjlilvd to llvrvwitlgjandim iron disjkl. ,kcjvtl Vtil t, olifil wi tl l `i-l n sha. t"- hnt -tohavv slight lgltvral l'll'ovclilellt thvroln snhstantalllv astlscrilxgd; 'i

ln a changF` llllcfsign, thv colllbillationof n signval'rlprvtilllprsing a serivsofsigntrainvs snspvn hfd llotwv-enn palir'ofvndlvs' chains.' pairsif sprockets arolnld'whiclltlle chains nrt'vcllusdd to travel and. triv-lllgsllnlt to which n nrofvslliil sprockctgtl'ljc Svvnrvd, with arlnagli'nct-ihrukv, consisting of a stz'lrslla|wkl llrakv-li'llvtll scurvd 'toxeliidudritfl lg-sl ml' t a lvvvr llavi n.g\a roi lvr svcllrvld thel'vto to lit into tllcindcntntions-ot .said hljnkcwhvvl, a nmgnvt-coil, :l plltngvr slidinging lid l -niagnvt-voil, ajro'd colltlcvtillgtllc pl'tingvi" IOO shalt., n` lvvvr 'littlingngnns't said whvvl, :1 pinngvr sliding in n magnvtwoil, ll rod connvr-.tinglvvvrand |lln1l 1c:,n brass-rollvxtnlllthrough thc rcar vnd of' thv yokc vt thc. 130

heroes coil, and a spring attnclicil to said roll to l which the siuoclicts over which the chains are caused to throw out the plunger Vwlicullic magneti-oil is inert, two electric circuits, a pair ol posts' inserted in each of said cricuts, and ii orcutbreaker comprising an adjustable cross-bar secured to said orass rod-of thcniagnetic brake Imechanism and arranged to, connect anddiscon nect said posts with the movement of the plunger, ali substantially ilcsirirllicd. TO i 7. In a changeable sign, the combinzuion Aol" a signcarrier comprising` :L seris of signframes revolving around'a main' shaft in drivfV ing connection therewith, a magnetic brake meehanisnucom rising a lever, a magnet coil, plunger an spring for 'operating said lever, and an indented wheel secured to said` main shaft, intol the imlentatons`of which said lever works, and an electric ,contilollen for said brake mechanism, conssting'of Ja, brass c rlirder suitably-supported, gearing for imprting motion from the maui-shaft lo said, cylnder by which'it ,7s caused ito'fim-ak-J one complete reyilnxton simultaiieouslyi,withV4 a like revolutfon of `the signcarrier, a series of contact-pins,l one for each sign-frame, iii- I serted in the periphe olf said cylinder and i arranged-toeorrespon in'relative position to the relative position of the sign-frames, a cori;- responding number of brushes suitably supi ported toV make contact each w.' th one` only of said pins when the cylinder revolves, anda,

i' brush 'suitably supported to make continu-:

as describen,

ous contact with sad cylinder, substantially- 1 1A- :l'g

8'. In a changeable sign, the'combinatlon of a sign-carrier comprisinga'series fof signframes suspended between a pair olehiiins,v

pairs of sprockets over which thecha-ins "arel caused to run, and a shaft in divingconnec'n tion therewith, a magnetic rlu tch mechanism to rotate-said shaft, comprising a. magnetcoil rotating' freely on and an armature keyed to s'aidsliaft, and a two# eed electric controller, consisting of a sha t turning'insuit-- able supports,'a brass cylinder Awith. lateralA rows of holes in its outer surface, secured to said shaft, contactqiins for insertion in said holes, a row of brushes suitably supported, one brush makin r .continuous contact with said cylindecanrl the others suspended tov make contact with the pins when` inserted, a gear secured tothe aforesaid cylinder-shaft, a rocker-arm suitabl supported, a large and la small gear suspended on either cndol said rocker-arm, a pulleyto which power is applied, sprockets and a chain for iinpartimcr motion from said povi-'eriullejP to said large tact-pins for insertionin the holes in saidcyl sprockets arcuri and small gears, a spring or holdingA tliilarge gear in rneshwith the gear on the v riiiid shaft, and a iriagilctcoil and plunger lor pu iupr the largegear out of'incsh and the `small i I u 1 lor releasing saine. a cirouit-brca-ker comprisf iup ico sots of posts inserted one set' in the gear in mesh, substantiallyY :is described 9. ln a'changeable sign, the n. iinlunaion 0f a sign-carrier comprising a. sci-iesy o? signe j frames, a pair of endless rhuizn` bein i sign-frames are suspended, pairs of tra wl and a shaft in driving connection tlierewlth, a magnetic clutch mechanism for rotating said shaft, a magnetic brake mechanism 7 c V slow speed'automatically, comprising aset of constaritly-rotating gears suspended on a' .'rocker'farm, a spring for throwing thejastfgear in mesh and av magnet-coil and plunger for throwing the slow gear in mesh, a brush 'f suitably supportedand suspended to make 1'1 continuous Contact,v with said cylinder,

inder,-and `aseries 'of brushes suitablys p ported ,and suspended-cto make-contact with* said pinswheninserted, the other comprisingn fj "a bIESS'cylin'der having a series of contact: 1

pins arrzimegfedV thereon to; yczorrespond t'o'z the. relitti?? PSO h'ruslr-onjtheaother controller, .al brush suit ablyl s'up )orted Ato alie continuous contact with sai cjflindemandgearing forl imparting motiontosaid cylinder'fro'm the sign-carrier sliaftvto cause `it 'to revolve 'simultaneously stantiallyasdescribed?. V f lll; Infa changiilgle,sign, the combination A siiga series otrs' nframesya p'airfofien ssfchains, means or suspending the1 signframesz between said cliains,-including .la Vcolla'lpsible Arod and tube connection between the frames for allowing with afre'volutinfof the sign-carrier, all sub- ,loo

vthem to turn angleswith the chains, pairs of 'which the chains are caused to travel, and a driving-shaft i secured to u. pair of said sprockets for imparting motion to the chains, a magnetic clutch Vmechanism secured to said shaft, (":omprising a iiiagnct-coil constantl' rotating on said shaft and an armature s dabl `but non-rotatably .fxed on said shaft, an e `ectric Vcircuit ruiming` throu h said magnet-coil, hereinafter called t e clut'chscoil circuit, means for illuminatin the signs coinprisinf a suitable rellectorox, suitable electric amps contained in said box and a liilitiiig-circuit runnii'igmhrough said lamps, a magnetic brake mechanism o erst ing;` on said-shaft, comprising an in ented lnalcf-u-'hech ii lever fitting into the indentations of :nid brake-wheel, a magnet-coil and plunger l'or operatil'ig said lever, und a spring nfl' era teil hy the movement of the plunger of the nnwnemo hruke ineelmnxsln, mi electricy oontroller for the mugnitio hmke' mechanism, l

comprisingr :i hruss cylinder with eontncbpins in its outer snrfuf-e, in number equal to the number ot' sigwfrznnes, it corresponding nurnhcr of hruhes .suitably suporteii :1nd snspendeil to nmlie Contact. @ne i with one only ofthe sign-carrier, the pins :unl brushes being so arranged to have u pin [nuke contact when i its corresponding sign-frame is in display position. u hrush suibuhly supported und susnette clutch-coil und also through the Inn peniled to inuke vontinuous Contact with the eyliniler, und wiring connecting saxiil brush with the nmgnet-coilof the lnukomechanism, und n inuin eleetrie controller comprising :i vylindor with lateral rows of holes thereon, montant- )ins for insertion in sniil holen, means for revo vini: Suid cylinder :it hist, or slow spe-ed uutonmtieully, comprising u rockerurln, n. lau-ge und n simili gear on either enil ot" said mln, means for imparting continuous motion to these gears, :L gein in driving connection with the cylinder, n spring for holding the large geur in lnesh for turning the cyln inde4 fast., and u inng11et-eoil and plunger for pullinglthe small geur in .mesh for turning the i cylinder slow, :L brush. suitably supported :ind susi'ienfled to make continuous Contact with umd cylinder, wiring connecting said hrufsh with the Source of power, n row of brushes col-responding in number tio the, nuniher of sign-frames suitably supported unil suspended to make Contact with the contacta-pins when inserted, wiring connecting vzmh of said brushes with its corresponding brush on the hrake-n'ieehmiisin controller, a. hrnsh suitably su )ported and suspendedrto nmlze eont'iiet with pins when inserted, and wiring;r connectingr this brush with the magnet -eoil of the speed-regulator of the contro ler,l and wiring from the magnetic clutchfreoil through` the circuit-breaker, substantially as shown luid described.

ln testimony whereof have signed our niumh` to this speeiticution in the presence of two suhSi-rihing Witnesses.

'THOMAS W. THOMAS. GEORGE WT. GILLETTE.

Witnesses: WM. l-I. CHAPMAN, EDWARD J. ROBINSON. 

